Intel SSD's are honestly the best when it comes to reliability. They have the lowest RMA's.
The Crucial M4 and Samsung 830 are both great drives Don't get me wrong, but the Intel drives are better IMO.
Edit: Just realized the emphasis on budget drive.
Sent from my EVO 3D

Lol no. Intel 320 drives are absolutely terrible - recall the 8MB bug? Some people said the issue reoccured after the firmware update that was supposed to fix it. Not to mention that the 320 is barely faster than the X25M-G2. Intel 520 is good. But now that the new 520 replacement is going to be Sandforce-based... not so sure on Intel.

Go with the M4, as it just the flat out better drive. Also, neither come with mounting brackets.

In what way? The only actual advantages the M4 has are a slightly lower price (830 is back down to 159, btw, 4L) and slightly better 4k random read performance. The 830 has the advantage with about everything else.

i would add intel ssds to that list, but yes the m4s and the samsungs are my picks. personnaly the m4 is so fast id just get one and pocket the money saved over the samsung. once its that fast, i dont think youll notice the differance